blackmatter | 520bd9ed608c668810971dbd51184c6a29819674280b018dc4027bc38fc42e57

General

Target

911.exe$.exe
Size

78KB
MD5

50c4970003a84cab1bf2634631fe39d7
SHA1

721a749cbd6afcd765e07902c17d5ab949b04e4a
SHA256

520bd9ed608c668810971dbd51184c6a29819674280b018dc4027bc38fc42e57
SHA512

fb210c92f7d1be9f9361b11dffd30fac78eeaadabf844a78a7dad00169f994d089c1cf4a037d6a1b82fddf35a6bfa34b8cbf216ce1786f407dfc015c72533504

Score

10^/10

blackmatter ransomware

Malware Config

Extracted

Path

C:\1rWCqamCt.README.txt

Family

blackmatter

Ransom Note

~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> What happens? Your network is encrypted, and currently not operational. We need only money, after payment we will give you a decryptor for the entire network and you will restore all the data. >>> What guarantees? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption and we will delete your data. If we do not give you decrypters or we do not delete your data, no one will pay us in the future, this does not comply with our goals. We always keep our promises. >>> How to contact with us? 1. Download and install TOR Browser (https://www.torproject.org/). 2. Open http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/0JOA98TDMXLHJ77VDOO >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/0JOA98TDMXLHJ77VDOO

Signatures

BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
ransomware blackmatter

Modifies extensions of user files 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\LimitDisable.raw.1rWCqamCt	911.exe$.exe
File renamed	C:\Users\Admin\Pictures\LimitTest.tiff => C:\Users\Admin\Pictures\LimitTest.tiff.1rWCqamCt	911.exe$.exe
File opened for modification	C:\Users\Admin\Pictures\LimitTest.tiff.1rWCqamCt	911.exe$.exe
File renamed	C:\Users\Admin\Pictures\RepairWait.tif => C:\Users\Admin\Pictures\RepairWait.tif.1rWCqamCt	911.exe$.exe
File renamed	C:\Users\Admin\Pictures\ResumeOptimize.crw => C:\Users\Admin\Pictures\ResumeOptimize.crw.1rWCqamCt	911.exe$.exe
File renamed	C:\Users\Admin\Pictures\LimitDisable.raw => C:\Users\Admin\Pictures\LimitDisable.raw.1rWCqamCt	911.exe$.exe
File opened for modification	C:\Users\Admin\Pictures\LimitTest.tiff	911.exe$.exe
File opened for modification	C:\Users\Admin\Pictures\RepairWait.tif.1rWCqamCt	911.exe$.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeOptimize.crw.1rWCqamCt	911.exe$.exe

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\1rWCqamCt.bmp"	911.exe$.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\1rWCqamCt.bmp"	911.exe$.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
1028	911.exe$.exe
1028	911.exe$.exe
1028	911.exe$.exe
1028	911.exe$.exe
1028	911.exe$.exe
1028	911.exe$.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Control Panel 3 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\International	911.exe$.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop	911.exe$.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallpaperStyle = "10"	911.exe$.exe

Modifies registry class 20 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_Classes\Local Settings	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff	splwow64.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0"	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	splwow64.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1"	splwow64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}"	splwow64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}"	splwow64.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2000	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1028	911.exe$.exe
1028	911.exe$.exe
1028	911.exe$.exe
1028	911.exe$.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
752	splwow64.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeBackupPrivilege	1028	911.exe$.exe
Token: SeDebugPrivilege	1028	911.exe$.exe
Token: 36	1028	911.exe$.exe
Token: SeImpersonatePrivilege	1028	911.exe$.exe
Token: SeIncBasePriorityPrivilege	1028	911.exe$.exe
Token: SeIncreaseQuotaPrivilege	1028	911.exe$.exe
Token: 33	1028	911.exe$.exe
Token: SeManageVolumePrivilege	1028	911.exe$.exe
Token: SeProfSingleProcessPrivilege	1028	911.exe$.exe
Token: SeRestorePrivilege	1028	911.exe$.exe
Token: SeSecurityPrivilege	1028	911.exe$.exe
Token: SeSystemProfilePrivilege	1028	911.exe$.exe
Token: SeTakeOwnershipPrivilege	1028	911.exe$.exe
Token: SeShutdownPrivilege	1028	911.exe$.exe
Token: SeBackupPrivilege	760	vssvc.exe
Token: SeRestorePrivilege	760	vssvc.exe
Token: SeAuditPrivilege	760	vssvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
752	splwow64.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1028 wrote to memory of 2000	1028	911.exe$.exe	35
PID 1028 wrote to memory of 2000	1028	911.exe$.exe	35
PID 1028 wrote to memory of 2000	1028	911.exe$.exe	35
PID 1028 wrote to memory of 2000	1028	911.exe$.exe	35
PID 2000 wrote to memory of 752	2000	NOTEPAD.EXE	37
PID 2000 wrote to memory of 752	2000	NOTEPAD.EXE	37
PID 2000 wrote to memory of 752	2000	NOTEPAD.EXE	37
PID 2000 wrote to memory of 752	2000	NOTEPAD.EXE	37

C:\Users\Admin\AppData\Local\Temp\911.exe$.exe
"C:\Users\Admin\AppData\Local\Temp\911.exe$.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1028
- C:\Windows\SysWOW64\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" /p C:\1rWCqamCt.README.txt
  2⤵
  - Opens file in notepad (likely ransom note)
  - Suspicious use of WriteProcessMemory
  PID:2000
- - C:\Windows\splwow64.exe
    C:\Windows\splwow64.exe 12288
    3⤵
    - Modifies registry class
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:752

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:760

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

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Downloads

memory/752-68-0x000007FEFBD61000-0x000007FEFBD63000-memory.dmp

Filesize
8KB

Download
memory/752-69-0x00000000041D0000-0x00000000041D1000-memory.dmp

Filesize
4KB

Download
memory/1028-60-0x0000000075801000-0x0000000075803000-memory.dmp

Filesize
8KB

Download
memory/1028-61-0x0000000000995000-0x00000000009A6000-memory.dmp

Filesize
68KB

Download
memory/1028-62-0x0000000000990000-0x0000000000991000-memory.dmp

Filesize
4KB

Download
memory/1028-63-0x00000000009A6000-0x00000000009A7000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads